Potenza Sport

About the Bridgestone Potenza Sport

Summer Ultra High Performance Passenger Car tire.

Features

* New, ultra-high silica compound* Tread pattern geometry with deep circumferential grooves* Substantial ribs and blocks* 3D sipe technology* Tuned tread sequencing* Platinum Pact Limited Warranty* 90-Day Buy and Try Guarantee

Benefits

* For exceptional grip and responsive handling in extreme performance driving conditions* Promote water evacuation* Maximize rubber to road contact and help maintain contact pressure* Enhance pattern stiffness and provide an optimized balance of traction and wear performance* Minimizes pattern noise, promoting a quiet, comfortable ride

Understanding the 315/30ZR23 XL size

In the size code 315/30R23, 315 is the section width in millimetres (about 12.4"). 30 is the aspect ratio — the sidewall height is 30% of the width, or roughly 94.5 mm. R23 means radial construction on a 23-inch wheel, giving an approximate overall diameter of 30.4".

The load index 108 means each tire supports up to 2,205 lbs — about 8,820 lbs across a full set of four. The speed symbol Y certifies the tire to 186 mph under its rated load. Always match or exceed the load index and speed rating listed on your vehicle's door-jamb placard.

Tread life and grip ratings

This tire carries a UTQG rating of 300 AA A. The treadwear grade of 300 is a relative durability score — a grade of 200 is expected to last roughly twice as long as a grade of 100 under the same controlled test. Traction grade AA measures straight-line wet stopping grip (AA is highest, then A, B and C). Temperature grade A reflects heat resistance at sustained speed (A is highest).

Price and value

At $617.99 per tire, a full set of four costs $2471.96. That sits close to the average for the 6 tires we stock in this size.